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Method for producing food-level white oil by hydrogenation technique

A food-grade, high-tech technology, which is applied in the field of producing food-grade white oil by one-stage series hydrogenation process, can solve the problems of high cost and complex process, and achieve the effect of many secondary pores, simple process flow and small grain size

Active Publication Date: 2008-03-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] To sum up, the existing technology of producing food-grade white oil from vacuum distillate oil, solvent-refined deasphalted oil and Fischer-Tropsch synthetic oil requires at least three stages of hydrogenation to solve the problems of product pour point and aromatics content process, so the process is more complicated and the cost is higher

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 227.1 g of amorphous silica-alumina (SiO 2 The content is 45w%, the pore volume is 0.75ml / g, and the specific surface area is 390m 2 / g), 18.8 grams of modified β molecular sieves, 65.8 grams of macroporous alumina (the pore volume is 1.0ml / g, and the specific surface area is 460m 2 / g) into the roller compactor, mixed for 30 minutes, then add 288.5 grams of binder (with a pore volume of 0.4ml / g and a specific surface area of ​​280m 2 / g of small-pore alumina 107.1g, HNO 3 Molar ratio to alumina is 0.3), rolling for 30 minutes, then add 60 ml of water, continue rolling until the paste can be extruded, extruded, and dried at 110°C for 6 hours. The dried strips were calcined at 580° C. for 4 hours to obtain the carrier. The carrier was impregnated with an impregnating solution containing tungsten and nickel at room temperature for 2 hours, dried at 120°C for 6 hours, and calcined at 480°C for 4 hours to obtain a hydrotreating catalyst, whose physical and chemical prope...

Embodiment 2

[0036] 252.8 grams of amorphous silicon aluminum (SiO 2 The content is 65w%, the pore volume is 0.58ml / g, and the specific surface area is 340m 2 / g), 9.4 grams of modified β molecular sieves, 41.1 grams of macroporous alumina (pore volume is 0.75ml / g, specific surface area is 360m 2 / g) put into the roller compactor and mix for 20 minutes, then add 323.1 grams of binder (with a pore volume of 0.45ml / g and a specific surface area of ​​300m 2 / g small pore alumina 120.0g, HPO 3 The molar ratio to alumina is 0.2), continue rolling for 40 minutes, then add 55 ml of water, roll until the paste can be extruded, extrude, and dry the extruded strips at 140°C for 3 hours. The dried strips were calcined at 530° C. for 5 hours to obtain the carrier. The carrier was impregnated with an impregnation solution containing tungsten and nickel at room temperature for 4 hours, dried at 130°C for 3 hours, and calcined at 460°C for 5 hours to obtain catalyst B. The physical and chemical prope...

Embodiment 3

[0039] 201.4 g of amorphous silica-alumina (SiO 2 The content is 30w%, the pore volume is 0.89ml / g, and the specific surface area is 460m 2 / g), 31.3 grams of modified β molecular sieves, 82.8 grams of macroporous alumina (same as Example 1) were put into the roller compactor and mixed for 40 minutes, then added 265.4 grams of binding agent (same as Example 1), and continued Roll for 25 minutes, then add 30 milliliters of water, roll to extrude paste, extrude, and extrude at 130°C for 4 hours. The dried strips were calcined at 680° C. for 2.5 hours to obtain the carrier. The carrier was impregnated with an impregnation solution containing tungsten and nickel at room temperature for 8 hours, dried at 130°C for 4 hours, and calcined at 530°C for 3 hours to obtain catalyst C. The physical and chemical properties are shown in Table 1.

[0040] The properties of the modified β molecular sieve are: molecular sieve SiO 2 / Al 2 o 3Weight ratio 85, specific surface 530m 2 / g, th...

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Abstract

The present invention provides one-section hydrogenation process for producing food level white oil. By using vacuum gas oil, deasphalted solvent oil and Fischer-Tropsch process oil as material, and hydrogenating catalyst containing modified beta-molecular sieve in 1-9 wt%, and through hydrocracking inside a hydrocracking co-current reactor to obtain reaction product, hydrorefining in a countercurrent hydrorefining reactor with flash region to exhaust gas and liquid hydrocarbon, the reverse contact reaction between the downward flowing liquid hydrocarbon and the bottom entering newly formed hydrogen in the bed layer with reduction type hydrogenating catalyst, and final gas-liquid separation and product distillation, food level white oil is produced. The process is simple and has high product quality.

Description

technical field [0001] The invention relates to a method for producing food-grade white oil, specifically a method for producing food-grade white oil by adopting a one-stage serial hydrogenation process. Background technique [0002] White oil is a type of petroleum product obtained by deep refining of lubricating oil fractions to remove impurities such as aromatics and sulfides in lubricating oil fractions. It is colorless, odorless and stable in chemical properties, and is widely used in chemical industry, daily necessities, food, medicine, textile and agriculture and other fields. According to different uses and refining depths, white oil can be divided into industrial, cosmetic, food and pharmaceutical categories. Among them, food-grade white oil is the most refined. [0003] The white oil production process is mainly the process of removing sulfur, nitrogen, aromatics and other impurities from the base oil. The production process of white oil mainly includes: old thr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/12C10G65/04
Inventor 关明华全辉姚春雷刘平林振发
Owner CHINA PETROLEUM & CHEM CORP
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